US Split Tapered Bearings mini Catalogue - Cooper Bearings

T e c h n
i c a l
I n f o r m at i o n
75mm to 180mm
split tapered BEARINGs

introduction
The Cooper split tapered bearing is intended for the ‘fixed’
bearing position of shafts where there is both radial and axial
loading and our ‘GR’ cylindrical roller bearing is unsuitable.
It is constructed with two opposed rows of rollers to take
axial loading in either direction, and is intended to be used with
‘expansion’ type bearings in all other positions on the shaft.
Cooper split tapered roller bearings are generally mounted in a
‘cartridge’ in a similar way to Cooper cylindrical roller bearings.
This is a spherically-machined inner housing that can be fitted
into a number of types of outer housing.
The spherical seat between the cartridge and the outer housing
accommodates misalignment between the shaft and mounting
structure.
The cartridge also houses the seals. This ensures that the seals
are maintained concentric to the shaft, even if there is significant
misalignment of the shaft relative to the outer housing.
Cartridges for tapered bearings are fitted with a hole
in communication with the outer race, for fitment of a
temperature element, as standard. The standard hole position
is in the end face of the cartridge. The proximity of this hole
to the shaft means that if the temperature element is of the
headed type, generally it will need to have a cranked probe.
Alternative hole positions are possible, including radial holes
requiring additional holes in the outer housing.
Outer Housings
Pedestal Cap
Tapered bearing in cartridge
As the cartridge spherical seat diameters are common to the
seats for Cooper cylindrical bearings, the bearing and cartridge
unit can be fitted in a wide variety of existing housing designs.
However, the two types most commonly used are the pedestal
(or ‘pillow block’) and flange.
Pedestal (or ‘pillow block’)
Cartridge
Cage and rollers
Outer race
Pedestal
Base
Clamping
rings
Inner race
Seals (various
options
available)
Shaft
Flange
Ductile iron pillow blocks and flanges are offered as standard
with these bearings. Please confirm load capacities of housings
with our technical department before finalising designs.

75mm to 180mm
Split tapered BEARINGs
Bulkhead sealing
It is often found economical to combine a bearing and bulkhead
seal into one unit. This reduces the number of individual
units required, and prevents problems with shaft eccentricity
sometimes encountered at the bulkhead seal when it is separated
from the bearing.
Generally, a specially adapted flange mounting is used and the
bearing is fitted with SRSRP seals (see page 6). Generally, the
flange incorporates additional sealing to the cartridge seating, and
may include sealing on the mounting face (‘backface’).
Where the shaft surface speed is too high for standard SRSRP
seals, an alternative high speed version is available, or alternative
seal types can be used if a moderate leakage of water is
permitted through the bearing in an emergency.
Sealing to flange mounting face (“BFS”)
Sealing to swivel seating (“SSE”)
SRSRP Seal
Combined bearing and bulkhead seal
Bearing Selection
Bearing ratings for dynamic radial capacity (Cr) and static radial
capacity (Cor) shown in this leaflet are in accordance with ISO
281-1990 and ISO 76-1987 respectively.
Radial and axial loads must be considered together as combined
‘equivalent loads’, as explained below. Generally, maximum
instantaneous loading is governed by housing strength rather
than bearing static capacity.
Dynamic rating
Expected bearing life is calculated by the following equation:
L10 = [Cr/(P x fd)] (10/3)
where:
L10 = expected life of 90% of similar bearings
under similar operating conditions
Cr = radial dynamic rating
P = equivalent dynamic load
fd = dynamic or service factor, generally from
1 for steady loading to 3.5 for heavy shock,
reciprocation or vibration
The dynamic equivalent load is calculated as follows:
when F a /F r ≤e : P = F r + Y 1 F a
when F a /F r >e : P = 0.67F r + Y 2 F a
where:
F r = applied radial load
F a = applied axial load
and calculation factors Y 1 , Y 2 and e are given in the product data
tables.
Life calculation with multiple load conditions
Where varying loads are experienced in operation, using the
maximum load condition may lead to an unrealistically low
calculated life. For n load conditions constituting the full load
cycle (at constant speed), an overall dynamic equivalent load may
be calculated as follows:
i=n
0.3
P = [ΣP (10/3) i p i ]
where:
P i
p i
i=1
= dynamic equivalent load under load
condition i
= proportion of time load condition i is
applicable
Where the load is continuously variable it may be broken down
into a discrete approximation to the actual load cycle.
Minimum loading
In order to avoid excessive skidding of the rollers, sufficient
loading must be applied to the bearing, as follows:
P ≥ 0.01Cr
2

Static rating
The static load rating is defined as the load at which a contact
stress of 4GPa occurs at the centre of the most heavily loaded
contact, and at which a permanent deformation of 0.0001 times
the roller diameter is sustained at the location of the contact.
This has been found to not cause significant deterioration in
bearing performance under typical operating conditions.
The suitability of a bearing for sustaining a specified static (or
instantaneous maximum) load is determined as follows:
where:
C or ≥ S o x P o
C or
S o
P o
= static radial capacity
= static safety factor
= F r + Y o F a where calculation factor Y o is
given in the product data tables.
Standard shaft design
3
Temperature Characteristics
Standard bearings can operate at between -20°C and 100°C.
Operation outside this range is possible but may require special
treatment of bearings parts – please contact our technical
department.
The difference in temperature between the shaft and housing
should not exceed 40°C.
Standard shaft design with ATL seals
(where applicable)
Mounting Arrangements
General arrangements
In order to provide accurate and positive location of the
inner race on the shaft, these bearings are generally mounted
on a recessed journal, and the standard cartridges and seals
are designed to suit this arrangement. As the bearings are
completely split to the shaft, there is no need to provide separate
collars to create this recess – it can be machined directly into
a solid shaft. Also, there is no need to design the surrounding
parts to allow for axial assembly of the bearing and it can be
fitted between integral shaft flanges, cranks, mounted parts and
assemblies etc.
Usually, the shaft is carried through the end of the cartridge at
the diameter of the journal abutment, with the seals operating
on this larger diameter. If aluminium triple labyrinth (ATL) seals
are to be used, on some sizes the diameter of the cartridge end
bore would be excessive with this arrangement, so the shaft has
only narrow shoulders abutting the inner race, with the seals
operating on a diameter equal to the journal diameter.
Shaft design for ATL seals
where standard not applicable
If the journal and the portions of the shaft under the seals
are required to be of the same diameter and integral abutting
shoulders are not possible, alternatives are to use spirally
wound retaining rings mounted in grooves in the shaft, or
special split location collars (usually requiring special cartridges
to accommodate them). It may be possible to locate the inner
race on the shaft using only the clamping effort provided by the
inner race clamping rings, without auxiliary location features, but
this should only be done in consultation with Cooper technical
department.

75mm to 180mm
Split tapered BEARINGs
Use of retaining rings
to locate inner race
All arrangements not conforming to the standard designs
illustrated in the product data tables will require confirmation of
dimensions and part codes for the cartridges and seals.
Use of split collars
to locate inner race
Alternative abutment diameters can be accommodated using
alternative seals and housing end bores. If larger shaft fillet radii
are required, we can supply bearings with extra large chamfers to
the inner race bores.
Shaft tolerance
Shaft tolerances are as illustrated opposite. The tolerance on
roundness and parallelism of the journal is IT6.
A tolerance of h9 is applicable to the seal seating area even
when it is the same nominal diameter as the journal.
4
diameter
over 50 80 120 180
(mm)
Tolerance
band (to
BS 4500)
up to and incl. 80 120 180 250
h6
+0 +0 +0 +0
-19 -22 -25 -29
h9
+0 +0 +0 +0
-74 -87 -100 -115
C +0.340
+0.120
d (h6)
A (h9)
IT6 19 22 25 29
max. shaft fillet radii:
75mm bore size: 1.2mm
all others: 2.3mm
Standard shaft design

Sealing
Standard Cooper housed tapered bearing units incorporate
a cartridge with spherical seating, which maintains the seals
concentric with the shaft under misaligned conditions.
Compared to units where the misalignment is taken up between
the bearing and outside housing, closer running clearances
(in non-contact seals) or more even seal pressure can be
maintained.
Grease groove (LAB)
Supplied as standard. Suitable for high or slow speed operations.
Particularly successful on marine applications when conditions
are clean and dry.
Cooper offer a wide range of seals, together suitable for most
environments. Some of the more common options are shown
below. Further types, or combinations of seals, are possible.
Different cartridges are required depending upon seal type.
Felt, high temperature packing and single lip (SRS) seals all use a
common cartridge.
If felt seal are specified, these are supplied with the cartridge
(although they can still be ordered separately). Other seal types
must be ordered separately (i.e. they are not automatically
supplied with the cartridge).
Temperature limits
bearing maximum
5
Maximum operating speeds of the various types of seals are
specified in dn(mm). To calculate the speed in dn(mm) multiply
the shaft speed (in rpm) by the diameter of the seal seating area
(in mm).
Maximum speed
Shaft surface finish
(max. roughness)
bearing maximum
3.2µm Ra
Felt (F)
Suitable for dry, dusty conditions.
Temperature limits -70°C to 100°C
Maximum speed
Shaft surface finish
(max. roughness)
150,000 dn(mm)
1.6µm Ra

75mm to 180mm
Split tapered BEARINGs
High temperature packing (HTP)
A direct replacement for felt in high temperature applications, or
for use in fire-resistant bulkheads.
Synthetic rubber single lip (SRS)
High temperature version (SRS HT)
Low temperature version (SRS LT)
Suitable for wet but not submerged conditions. Can be used for
improved lubricant retention by mounting lip inwards.
Temperature limits -70°C to 260°C
Maximum speed
Shaft surface finish
(max. roughness)
150,000 dn(mm)
0.8µm Ra
Temperature limits
Maximum speed
Shaft surface finish
(max. roughness)
SRS
SRS HT
SRS LT
150,000 dn(mm)
0.8µm Ra
-20°C to 100°C
-20°C to 175°C
-60°C to 100°C
6
Aluminium triple labyrinth (ATL)
High temperature version (ATL HT)
Low temperature version (ATL LT)
Machined aluminium bodied triple labyrinth seal for high speed
and general applications.
Spring-loaded single lip with retaining plate (SRSRP)
High pressure version (SRSRP 40M)
Suitable for severe splash or completely submerged conditions.
The standard version is suitable for up to 2m of water.
The high pressure version is suitable for up to 40m of water.
Temperature limits
Maximum speed
Shaft surface finish
(max. roughness)
ATL
ATL HT
ATL LT
bearing maximum
3.2µm Ra
-20°C to 100°C
-20°C to 175°C
-60°C to 100°C
Temperature limits -20°C to 100°C
Maximum speed
Shaft surface finish
(max. roughness)
150,000 dn(mm)
0.4µm Ra

BEARING DATA
B
C
D
d
7
bearing data
Shaft
Diameter
d (mm)
Reference
Cr
(kN)
Bearing Ratings Calculation Factors Principal Dimensions
Cor
(kN)
Max. Speed
(rpm)
Y1 Y2 e Yo
75 1DTB75M 143 208 3410 1.27 1.89 0.53 1.24 135 82.6 35 4.0
80 1DTB80M 152 232 3200 1.20 1.79 0.56 1.18 145 85 35 4.6
90 1DTB90M 160 254 2840 1.11 1.65 0.61 1.08 150 85 35 4.7
100 1DTB100M 235 379 2560 1.17 1.75 0.58 1.15 175 100 40 8.3
110 1DTB110M 282 504 2330 1.05 1.56 0.64 1.02 190 110 48 11.4
120 1DTB120M 295 544 2130 1.00 1.49 0.68 0.98 200 110 48 11.9
140 1DTB140M 296 555 1830 1.27 1.90 0.53 1.24 215 110 45 12.2
160 1DTB160M 350 670 1600 1.34 1.99 0.50 1.31 240 110 45 14.8
180 1DTB180M 358 716 1420 1.21 1.80 0.56 1.18 265 110 45 17.0
D
(mm)
C
(mm)
B
(mm)
Mass
(Kg)

cartridge data
L
L1
L1
L2
J
w (max.)
G
A
d
A
Type 1
Type 2
hole for temperature element
drilled Ø6.2 thro’ and tapped G1/8 x 12 deep
8
cartridge data
abutment
Cartridge for
LAB seals
References (1)
Cartridge for
ATL seals
Shaft
type
(2)
G
(mm)
J
(mm)
Principal Dimensions
1DTC75M-80M 1DTC05 2 177.80 50 138 140 162 11.8 80 7
1DTC80M-90M 1DTC06-80M 1 203.20 50 140 142 164 15.1 90 -
1DTC90M-100M 1DTC06-90M 2 203.20 50 146 148 170 13.5 100 7.5
1DTC100M-110M 1DTC07 2 231.78 64 170 172 202 20.1 110 7.5
1DTC110M-120M 1DTC08-110M 1 266.70 76 178 180 210 29.8 120 -
1DTC120M-130M 1DTC08-120M 1 266.70 76 178 180 210 26.5 130 -
1DTC140M-150M 1DTC09 2 279.40 76 190 192 222 31.2 150 10
1DTC160M-170M 1DTC11 2 311.15 76 200 202 232 47.0 170 10
1DTC180M-195M 1DTC31 2 336.55 95 200 206 232 42.5 195 9
L
(mm)
L1
(mm)
L2
(mm)
Mass
(Kg)
A
(mm)
w (2)
(mm)
1) For other seal types add seal type designation to end of reference for cartridge for LAB seals
e.g.120mm cartridge with SRSRP seals: 1DTC120M-130M SRSRP
2) Only applicable when fitted with TL seals. All other seal types run on shaft diameter A.

PEDESTALS
O
O
S
P
H
T
9
Note: Pedestals with solid bases also available.
R
N
R
N
pedestal data
Shaft
Diameter
d (mm)
Bearing
Reference
Reference (1)
(pedestal only)
H
(mm)
Min.
(mm)
R
Max.
(mm)
S
(mm)
No.
Bolts
Size
N
(mm)
O
(mm)
P
(mm)
T
(mm)
Mass
(pedestal only)
(Kg)
75 1DTB75M PN05 112 312 328 - 2 M24 380 90 44 252 13.3
80 1DTB80M PN06 125 342 366 - 2 M24 420 102 52 272 14.7
90 1DTB90M PN06 125 342 366 - 2 M24 420 102 52 272 14.7
100 1DTB100M PN07 143 374 410 - 2 M24 466 120 60 314 20.6
110 1DTB110M PN08 162 438 462 120 4 M24 508 178 38 372 43.3
120 1DTB120M PN08 162 438 462 120 4 M24 508 178 38 372 43.3
140 1DTB140M PN09 181 470 494 120 4 M24 558 178 41 405 52
160 1DTB160M PN11 213 356 380 114 4 M24 508 178 32 430 53
180 1DTB180M PN31 210 546 570 128 4 M24 636 204 50 470 83
1) For lubrication point to spherical seating add ‘SLUB’ to reference, e.g. PN08 SLUB

FLANGES
R PCD,
holes equally spaced
P
L
V
T
N
d
H
10
flange bearing data
Shaft
Diameter
d (mm)
Bearing
Reference
Reference (1)
(flange only)
T (2)
(mm)
Bolt
Size
R
(mm)
P
(mm)
H
(mm)
N (3)
(mm)
V (3)
(mm)
Mass
(flange only)
(Kg)
75 1DTB75M FN05 330 M16 274 19 79 215.90 3 19.4
80 1DTB80M FN06 356 M16 302 19 86 244.48 3 22.0
90 1DTB90M FN06 356 M16 302 19 86 244.48 3 22.0
100 1DTB100M FN07 382 M16 334 22 92 276.23 3 26.6
110 1DTB110M FN08 432 M24 374 22 98 314.33 3 34.9
120 1DTB120M FN08 432 M24 374 22 98 314.33 3 34.9
140 1DTB140M FN09 444 M24 384 25 98 317.50 3 40.8
160 1DTB160M FN11 496 M24 426 25 105 352.43 3 58
180 1DTB180M FN31 534 M24 466 25 124 393.70 3 81
1) For lubrication point to spherical seating add ‘SLUB’ to reference, e.g. FN08 SLUB
2) Dimension shown is as-cast dimension. Depending upon manufacturing method used, flanges supplied may be machined 5mm smaller
3) Dimensions shown are for locating spigot for mounting flange on to. Diameter tolerance of locating spigot: f8
Where SRSRP seals are used cartridge assembly may protrude into bulkhead. Consult Cooper for minimum bulkhead aperture size.

Lubrication
Fittings
Lubrication points are tapped 1/8”NPT and fitted with nipples
for grease lubrication as standard. Grease nipples may be
removed and replaced with other fittings or pipes. Pipework
must be flexible to allow the swivel cartridge to function
correctly.
BSP fittings may be used, but care must be taken to avoid
blocking off the lubricant cross-drilling as these fittings generally
screw in further than NPT fittings.
Lubricant type
Cooper tapered bearings and housings are designed for grease
lubrication. Grease is easier to retain in the housing than oil,
offering reduced lubricant loss and improved sealing. It also
offers better protection against corrosion to the rolling surfaces.
Greases of NLGI No.2 designation are recommended for most
applications. For centrally pumped systems a No.1 grease may
be used for increased ‘pumpability’.
Greases with extreme pressure (EP) additives are recommended.
11 Grease with a lithium complex thickener is usually used for
normal applications operating at temperatures between 0°C
and 80°C. When water resistance is required a grease with
aluminium complex thickener can be used. Aluminium complex
greases are not compatible with some other types of grease.
The bearing must therefore be solvent cleaned of other greases
before adding an aluminium complex based grease.
For extreme temperatures, speeds and loads always obtain a
lubricant recommendation from our technical department.
Selection of base oil viscosity
In order for the bearing to have a long service life the grease
selected for bearing lubrication must have a base oil of sufficiently
high viscosity to adequately separate the rolling elements and
race parts under operating conditions.
The charts in Figure 2 show the recommended operating ranges
for three common oil viscosities, for bearings under normal
loading (up to Cr/10).
To use these charts, find the ‘geometry factor’ for the bearing
from the table below and multiply this by the bearing speed in
thousands of rpm to obtain the velocity factor.
geometry factor
Shaft Diameter
d (mm)
Bearing
Reference
Geometry
factor
75 1DTB75M 63
80 1DTB80M 69
90 1DTB90M 78
100 1DTB100M 96
110 1DTB110M 110
120 1DTB120M 118
140 1DTB140M 144
160 1DTB160M 169
180 1DTB180M 196
For example, if a 100mm bearing is to be run at 1200rpm:
The geometry factor is 96 from the table
Velocity factor = 96 x (1200/1000) = 115.2
To determine the suitability of one of these oils, draw a vertical
line from the horizontal axis at the calculated velocity factor, and
draw a horizontal line from the vertical axis at the operating
temperature.
If the lines intersect in the shaded area the viscosity of oil is
suitable. If the lines intersect above the shaded area a higher
viscosity oil is required. If the lines intersect below the shaded
area the bearing may operate satisfactorily but it is suggested that
a grease with a lower viscosity base oil is used.
The use of these charts is subject to the operating conditions
being within the recommended ranges for the lubricant as
specified by the lubricant manufacturer.
For conditions not covered by these charts please contact our
technical department.
Note that the lubrication film thickness is not particularly
sensitive to load, so for heavier loading the lubricant selection as
provided by these charts is usually sufficient provided that the
lines drawn on the chart as explained above do not intersect at
the upper edge of the shaded area.

75mm to 180mm
Split tapered BEARINGs
Figure 2
Cooper Bearing recommended speed
and temperature range for VG 150
grease and oils
Temperature (°C)
120
110
100
90
80
70
60
50
40
30
20
10
0
-10
-20
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300
Velocity factor = geometry factor X rpm in thousands
Cooper Bearing recommended speed
and temperature range for VG 220
grease and oils
Temperature (°C)
120
110
100
90
80
70
60
50
40
30
20
10
0
-10
-20
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300
12
Velocity factor = geometry factor X rpm in thousands
Cooper Bearing recommended speed
and temperature range for VG 460
grease and oils
Temperature (°C)
120
110
100
90
80
70
60
50
40
30
20
10
0
-10
-20
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300
Velocity factor = geometry factor X rpm in thousands

Grease quantity for initial lubrication
The quantity of grease required on initial lubrication is dependent
upon operating speed and temperature.
If the operating temperature is below 80°C the quantity of
grease may be determined directly according to the bearing
reference and operating speed from the table below. If the
operating temperature is above 80°C a 25% pack of grease
should be used regardless of operating speed (refer to the right
hand column of the table).
With a ‘full pack’ of grease the space within the housing (i.e.
surrounding the bearing components) in the assembled unit is
completely filled with grease.
The table assumes normal density grease (about 0.85 g/cm 3 ).
Routine Greasing
Relubricate the bearing weekly or every 150 hours of operation.
Sizes up to and including 120mm: Use 2ml of fresh grease.
Sizes over 120mm: Use 4ml of fresh grease.
Note that 2ml is approximately 1 shot from a conventional sidelever
grease gun.
Automatic lubrication systems should be metered to deliver
grease at an average rate equivalent to the routine greasing
periods and quantities specified.
If it can be done safely, the bearing should be re-greased as it
rotates to help distribute the grease.
Do not mix different types of grease in the bearing. Excessive
quantities of lubricant should not be used, particularly at high
speeds, as this may result in excessive churning and overheating.
Initial lubricant quantities
Shaft
Diameter
d (mm)
Bearing
Reference
Speed
(rpm)
up to
Grease
(full pack)
(Kg)
Speed (rpm)
Grease
(75% full
pack) (Kg)
Speed (rpm)
Grease
(50% full
pack) (Kg)
Speed (rpm)
from to from to from to
Grease
(33% full
pack) (Kg)
Speed
(rpm)
over
Grease
(25% full
pack) (Kg)
75 1DTB75M 667 0.19 667 1333 0.14 1333 2000 0.10 2000 2667 0.06 2667 0.05
80 1DTB80M 625 0.23 625 1250 0.17 1250 1875 0.12 1875 2500 0.08 2500 0.06
13
90 1DTB90M 556 0.25 556 1111 0.19 1111 1667 0.12 1667 2222 0.08 2222 0.06
100 1DTB100M 500 0.41 500 1000 0.31 1000 1500 0.20 1500 2000 0.13 2000 0.10
110 1DTB110M 455 0.44 455 909 0.33 909 1364 0.22 1364 1818 0.14 1818 0.11
120 1DTB120M 417 0.50 417 833 0.38 833 1250 0.25 1250 1667 0.17 1667 0.13
140 1DTB140M 357 0.65 357 714 0.48 714 1071 0.32 1071 1429 0.21 1429 0.16
160 1DTB160M 313 0.63 313 625 0.47 625 938 0.32 938 1250 0.21 1250 0.16
180 1DTB180M 278 0.77 278 556 0.58 556 833 0.39 833 1111 0.25 1111 0.19
Frequency Data
Bearing frequency data are included in this document for two
purposes:
• to allow machine designers to check excitation frequencies
against resonant frequencies in the machine,
• to allow correct input into condition monitoring equipment
that uses these data.
A roller bearing will excite vibrations at certain frequencies related
to the number, size and pitch circle diameter of the rollers. To
some extent this excitation is present even with new bearings in
perfect condition, as the load is carried on discrete, elastic, rolling
elements which are constantly changing in angular position.
The table at the top of the page opposite indicates the frequencies
of bearing parts per shaft revolution, which can be used to
calculate excitation frequencies directly by multiplying the tabulated
frequencies by the shaft speed.
The frequencies listed are explained as follows:
‘Cage’ – the frequency at which a point on the cage enters and
leaves the loaded zone of the bearing
‘Roller’ – the frequency at which a point on a given roller passes
into contact with either the inner or outer race
‘Outer’ – the frequency at which a point on the outer race
comes into contact with successive rollers
‘Inner’ – the frequency at which a point on the inner race comes
into contact with successive rollers
The table also lists the pitch circle diameters, number of rollers
and contact angle for use with condition monitoring equipment
that accepts this information.

75mm to 180mm
Split tapered BEARINGs
Bearing Frequencies
Shaft
Diameter
(mm)
Bearing
Reference
Part Frequencies (per shaft rev.)
Cage Roller Outer Inner
PCD
(mm)
Roller Details
No.
Diameter
(mm)
Contact
angle (°)
75 1DTB75M 0.445 4.264 8.006 9.994 102.6 18 11.95 17.50
80 1DTB80M 0.448 4.507 8.959 11.041 108.2 20 11.95 18.50
90 1DTB90M 0.453 4.898 9.955 12.045 117.4 22 11.95 20.13
100 1DTB100M 0.449 4.627 9.888 12.112 136.0 22 14.63 19.00
110 1DTB110M 0.455 5.167 10.926 13.074 147.9 24 14.29 21.25
120 1DTB120M 0.457 5.404 11.895 14.105 154.5 26 14.29 22.25
140 1DTB140M 0.461 6.022 12.901 15.099 176.4 28 14.62 18.00
160 1DTB160M 0.461 6.145 12.918 15.082 196.9 28 15.99 17.21
180 1DTB180M 0.465 6.776 13.959 16.041 216.8 30 15.99 19.00
Tightening Torques
The tightening torques for the assembly of the bearings
and housing are given in the following table. All screws are
metric coarse thread, grade 12.9. Full assembly instructions
are provided with each order, and are available separately if
required.
Tightening Torques
14
Shaft
Diameter
(mm)
Bearing
Reference
Clamping ring screw Cartridge joint screw Side screw Pedestal joint screw Flange joint screw
Screw size
Key size
A/F (mm)
Torque
(Nm)
Screw size
Key size
A/F (mm)
Torque
(Nm)
Screw size
Key size
A/F (mm)
Torque
(Nm)
Screw size
Key size
A/F (mm)
Torque
(Nm)
Screw size
Key size
A/F (mm)
75 1DTB75M M5x25 4 8.5 M6x25 5 11 M6x10 3 7.8 M16x65 14 225 M12x55 10 90
80 1DTB80M M5x25 4 8.5 M10x45 8 52.5 M6x10 3 7.8 M16x65 14 225 M16x65 14 225
90 1DTB90M M5x25 4 8.5 M10x45 8 52.5 M6x10 3 7.8 M16x65 14 225 M16x65 14 225
100 1DTB100M M8x30 6 35 M10x45 8 52.5 M6x10 3 7.8 M20x80 17 420 M16x65 14 225
110 1DTB110M M8x30 6 35 M12x55 10 90 M6x10 3 7.8 M20x80 17 420 M20x80 17 420
120 1DTB120M M8x30 6 35 M10x45 8 52.5 M6x10 3 7.8 M20x80 17 420 M20x80 17 420
140 1DTB140M M8x30 6 35 M10x45 8 52.5 M6x10 3 7.8 M20x80 17 420 M20x80 17 420
160 1DTB160M M8x30 6 35 M10x45 8 52.5 M10x16 5 30 M16x65 14 225 M20x100 17 420
180 1DTB180M M8x30 6 35 M10x55 8 52.5 M10x16 5 30 M20x80 17 420 M24x100 19 712
Torque
(Nm)

customer service centres
Germany
Cooper Geteilte Rollenlager GmbH.
Postfach 100 423
Oberbenrader Str. 407
47704 Krefeld
GERMANY
Tel: +49 (0) 2151 713 016
Fax: +49 (0) 2151 713 010
Email: CoopersalesDE@kaydon.com
COOPER BEARINGs group
USA, Canada, Mexico
and Central America
The Cooper Split Roller Bearing Corp.
5365 Robin Hood Road
Suite B
Norfolk
VA 23513
USA.
Tel: +1 (1) 757 460 0925
Fax: +1 (1) 757 464 3067
Email: CoopersalesUS@kaydon.com
UK, Europe, South America, Asia,
Australia and the Middle East
Cooper Roller Bearings Company Ltd.
Wisbech Road
Kings Lynn
Norfolk
PE30 5JX
United Kingdom
Tel: +44 (0) 1553 763447
Fax: +44 (0) 1553 761113
Email: CoopersalesUK@kaydon.com
People’s Republic of China
Cooper Bearings Group Beijing.
Room 909, Canway Building Tower 1
No 66, Nanlishi Road
Xicheng District
Beijing
PRC 100045
Tel: +86 (0) 10 68080803
+86 (0) 10 68080805
+86 (0) 10 68080806
Fax: +86 (0) 10 68080801
Email: CoopersalesCN@kaydon.com
Brazil
Cooper do Brasil Ltda.
Caixa Postal 66.105
CEP 05.314-970
Brasil
Tel: +55 (0) 11 3022 3706
Tel: +55 (0) 11 9156 2500
Email: CoopersalesBR@kaydon.com
India
Cooper Roller Bearings Company Ltd.
Wisbech Road
Kings Lynn
Norfolk
PE30 5JX
United Kingdom
Tel: +91 (0) 9820180089
Email: CoopersalesIN@kaydon.com
www.cooperbearings.com
Document code: CPR013_bEng_Aug10